@cainiaofe/cn-ui-m/es/components/cn-water-mark/__tests__/cn-watermark.test.js

## 在线文档

import React from 'react';
import { render, screen } from '@testing-library/react';
import { CnWaterMark } from '../index';
describe('CnWaterMark', function () {
    it('renders without errors', function () {
        render(React.createElement(CnWaterMark, null));
        expect(screen.getByTestId('cn-water-mark')).toBeInTheDocument();
    });
});